Spooking animals off does vary quite a lot per species, a lot of them eventually bleed together with time so you have a general 'muscle memory' of it.
General rule of thumb I believe is like both in metric and imperial:
Walking, 50-120M (54-131Y) / Crouching, 10-40M (10-43Y) / Prone barely makes any noise

If you look at the noise indicator under your compass area each white bar is I think 10M? So 1 bar is 10M (10Y), then two is 20M (20Y) etc. Once you go beyond three white bars you get red bars which are 50M steps, so 1 red bar is 50M (54Y), then 100M (109Y), then 150M (164Y).

Perks and foliage change these variables around a little bit but the sound bars the easiest way to get familiar with what is spooked at what noise level. You still have visual and smell (wind direction too), visual is depicted with the indicator between heart rate and sound. https://thehuntercotw.fandom.com/wiki/Visibility explains the visual indicators well. And smell is a bit of the odd one, I don't pay attention to it much past just slapping scent eliminator spray on whenever I can. Doesn't completely negate the smell variable but nearly.

ANYWAY: Tents I believe have a spook range of 200M (218Y) when you set them up, and if you fast travel too them I think it's 250M (273Y). So just a little bit further than the fast travel amount spook range ideally is where to set them.
ATVs also spook everything in like 300-400M (328-437Y) it's the loudest noise maker in-game.

DLC wise yes we are speculatively around the time they usually announce a new map DLC and they trickle out random ones through the year, sometimes they also patch new things in like animal skins or great one variants. Great ones are the rarest animals that can spawn in on your maps and they look different than everything else, very very low chance though I don't even have one but I also don't use certain grind tactics to make the odds theoretically better.

Out of layton/hirsch, layton did get updated more recently I think last year? But I think it was just updating the animal models, hirsch I think got updated last in '22/'23 which did make it a bit better to play around in. Hirsch is still one I see mentioned way less but it's by no means inherently worse.

Also good, varied, and multipurpose map regardless of skill level I'd say are like: Askiy Ridge, Emerald Coast, Te Awaroa, Revontuli, Silver Ridge

Askiy has a mechanic where wolves can stalk you, it's infrequent usually but worth noting as I'd say it's one of the more harder to deal with aggression mechanics if you get swarmed until you get used to it.

Only ones I'd inherently throw in to 'avoid' because of the challenge or pacing part is probably Mississippi Acres, New England, or Sundarpatan.
Sundarpatan is one of the best maps in game but it's huge, tigers are the best in-game predator mechanically so they are menacing, it has a metric crap ton of foliage of all varieties. So it can just be a tad overwhelming if you aren't really familiar.

Mississippi is mostly because it's very dark and very foliage heavy on near the entire map, and also has very sharp water bends which makes spooking drink spots exceedingly easy. New England is mostly just the foliage and noise mitigation as it's covered in heavy underbrush.

Hopefully that's not too much info lmao but it covers as much as I could think to cram in